Natural methods of contraception work on the principle of avoiding chances of ovum and sperm meeting. It includes

$A.$ Periodic abstinence

$B.$ Withdrawal

$C.$ Coitus interruptus

$D.$ Lactational amenorrhoea

$A$ : Both vasectomy and tubectomy are very effective, as the failure rate of such surgical approaches is almost zero percent.
$R$ : Reversibility is poor

Which of the following statement is/are correct about diaphragms, cervical caps and vaults?

$A.$ Barrier methods of contraception

$B.$ Cover the cervix during coitus

$C.$ Protect the user from contracting $STDs$

$D.$ They are reusable
 

Find out the natural contraception methods $I$. Implantation $II$. Lactational (amenorrhoea) $III$. Condoms $IV$. Vasectomy $V$. Tubectomy $VI$. Sterilisation

Periodic abstinence is avoiding sex during

$A$ : Surgical method blocks gamete transport and thereby prevents conception.
$R$ : Surgical method used in the male for this purpose is called vasectomy.